Related Experiment Video
Updated: Jul 4, 2026

15:57
Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
Published on: May 4, 2011
Video, text, and memory: An emotional verbal overshadowing effect
Heath A Demaree1, Rock Lim2, Amanda R Merner3
1Case Western Reserve University, Cleveland, OH, USA.
Memory & Cognition
|July 2, 2026
Summary
Emotional interpretations of videos, when presented separately from viewing, impair memory recall. This "emotional verbal overshadowing effect" highlights how timing impacts memory for visual events.
Area of Science:
- Cognitive Psychology
- Memory Research
- Information Processing
Background:
- Emotional events are generally better recalled than neutral events.
- The verbal overshadowing effect suggests verbal descriptions can impair memory.
- The interplay between emotional content and verbal overshadowing is not fully understood.
Purpose of the Study:
- To investigate if emotional verbal interpretations affect memory recall of visual events.
- To determine if the timing of emotional verbal information (before or after video) influences memory.
- To examine the impact of emotional verbal overshadowing on memory over time.
Main Methods:
- Participants (N=649) viewed videos with ambiguous emotional content.
- Emotional or neutral verbal scripts were presented before or after video viewing.
- Memory for video details, inferences, and text was assessed at immediate, 1-day, and 7-day delays.
Main Results:
- Emotional information presented asynchronously to the video significantly impaired memory recall.
- This effect, termed 'emotional verbal overshadowing,' was most pronounced when verbal interpretations were separate from video viewing.
- Memory decrement was observed across different delay intervals.
Conclusions:
- Presenting emotional verbal interpretations asynchronously with visual stimuli leads to memory impairment.
- The timing of emotional verbal information is critical for memory consolidation and retrieval.
- Emotional verbal overshadowing is a significant factor affecting memory for events.
More Related Videos
Related Concept Videos
Eyewitness Memory
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
One such error is memory distortion, which occurs because human memory does not function like a...
Traumatic Memory
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual remembers mundane...
Role of Amygdala in Memory
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
Chunking and Rehearsal in Sensory Memory
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...
False Memories
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
Interference and Decay
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...

